The circumstance that arises when a baby's poop is so explosive that it transcends the bonds of the diaper. May be exacerbated by the flailing tyke's tendency to "spread the news" with involuntary arm and leg motion. Usually demands the attention of multiple adults.

A uncontrollable urge to have a bowel movement, usually the results from binging on alcohol and cajun and or fried foods, most likely accuring in a public place. Symptoms include sweating, anal fire, liquid diahrea,goose bumps, chills and complete panic.

"I gotta find a Restroom Now... Im about to have a shituation!!!!!!"
When the urge to have a bowel movement is so great that a person has no concern of where this movement takes place or who hears, usually the shituation happens before their cheeks touch the toilet seat, basically the moment the cheeks feels air the shituation happens. Followed by a sigh of relief.